Correct the man page for nfs_bufpackets.  DEFAULT is not an acceptable value.
Correct the man page for nfs_bufpackets.  DEFAULT is not an acceptable
value.

PR:		conf/31280
MFC after:	3 days

jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase,jrobhoward/SCADAbase